Enable the usage of the SharpBrick.PoweredUp library

Minimum reproducable issue in the browser <div class="highlight highlight-source-j

WebAssembly Port about powered-up HOT 2 OPEN

sharpbrick commented on June 2, 2024

WebAssembly Port

from powered-up.

Comments (2)

tthiery commented on June 2, 2024

The WebBluetooth stack is not fast enough to setup a GATT characteristics handler. A member of the WebBluetooth WG was friendly enough and filed an issue as a request of my StackOverflow question.

Simultaneously reported to the LEGO Protocol repository in hope to get a command to explicit query the information which are send automatically in the beginning of the protocol setup (hub attached io).

from powered-up.

tthiery commented on June 2, 2024

Minimum reproducable issue in the browser

function writeToLog(x) {
    console.log(x.target.value.buffer);
}
async function connectToLwpDevice() {
    const serviceUuid = "00001623-1212-EFDE-1623-785FEABCD123".toLowerCase();
    const characteristicUuid = "00001624-1212-EFDE-1623-785FEABCD123".toLowerCase();
    const device = await navigator.bluetooth.requestDevice({ filters: [{ services: [serviceUuid] }] });
    const connectedDevice = await device.gatt.connect();
    const service = await connectedDevice.getPrimaryService(serviceUuid);
    const characteristic = await service.getCharacteristic(characteristicUuid);
    characteristic.addEventListener('characteristicvaluechanged', writeToLog);
    await characteristic.startNotifications();
}